Author Topic: looking for more out of my 454  (Read 9840 times)

Offline beastie_3

  • Senior Member
  • ****
  • Posts: 3170
  • Josh
    • My truck pics
Re: looking for more out of my 454
« Reply #15 on: September 23, 2010, 10:57:49 PM »
Apparently the OP has

Offline Grim 82

  • Senior Member
  • ****
  • Posts: 1651
Re: looking for more out of my 454
« Reply #16 on: September 23, 2010, 11:53:46 PM »
I'm staying below 5000rpm.  So by what I read here there's nothing I can do to pep up my 454?!?!  There's either a lack of know-how or a lack of interest in here to help out...either way I'll find somewhere else to find information. 

I'm not attacking anyone, just trying to point out a lack of something here.
I don't know alot about the big block's but you are overlooking alot of simple things that I think apply to any internal combustion engine. Ditch all the unnecessary equipment that you don't need for emissions, tune it up and upgrade your ignition system, exhaust, and fuel delivery. I haven't heard of a 2-barrel carb on a big block either, but there are a bunch of screamin 454's that guys on this site have that are running 4-barrels. I would look into that.
So by what you read here you could follow the path where you end up with easily a 500+ hp 454 by taking suggestions about swapping heads, cam, intake, etc. or leave us all wondering if you are asking about a motor full of vacuum leaks with a pinched fuel line wondering why you don't have more power out of your 454. Welcome to the site by the way. 8)
Give a man a gun, and he might rob a bank. Give a man a bank, and he might rob the world.

Offline trink2030

  • Newbie
  • Posts: 19
Re: looking for more out of my 454
« Reply #17 on: September 26, 2010, 03:58:41 PM »
That's good advice...thanks for not taking my post the wrong way although a little harsh now that I reread it, sometimes online doesn't catch the 'essence' of a message the way it should. 

The 400 is in and sieg was right, it feels a LOT better.  I was wrong about the 2bbl, it's a 4 that's my mistake. 

The truck runs great, a real clean idle and rev....no wierd sounds or misses throughout.  I am going to start removing all of the junk that's not needed, maybe I'll be able to 'see' the motor once all of that is off.  I'm going to have to start researching what is involved in removing all of the emissions, a procedure perhaps on the proper way to attack it without issues. 

in reply to zieg, I don't care about mpg down to 5-6 or so.

Ignition is a good and relatively cheap idea, I'll knock that out second. 

Thanks for the help 

Offline motion427

  • Newbie
  • Posts: 47
Re: looking for more out of my 454
« Reply #18 on: October 23, 2010, 04:49:55 PM »
Want more power and most important torque.
Yes,change the cam to something like a comp cam Extreme energy 262H or a 268H.Get the matching valve springs too.
A nice dual plane intake like the Edelbrock performer or even the performer RPM(works well with 268H cam).Even with the stock penut port heads.You could reach 400HP and close to 500lb-ft of torque with ease. 1 3/4" headers and 2.5" exhaust system will wake the old truck for sure.

The stock low compression hurts it a bit though.....If you decide to do a rebuit,try to bring the compression around 9.25-9.5 to 1. With the same setup,you could see 30-50HP more,and may reach close to 550 lb-ft of torque.
86 K10,350 Roller Cam,T350,NP205,10 bolt posi,12 bolt posi,33" tires.
85 K30,454,T400,NP205,Dana 60,14 bolt,being built now.
04 Avalanche Z71,6.0L,TVS 1900,Dynatech,Corsa,etc...
06 TBSS,AWD,6.0L,Kooks,C6 fan kit,etc...
75 Nova SS,502,T350,12 bolt